In experiments on SNS junctions, \(I_C R_N\)  is ubiquitously used as a metric for junction quality. In most casses \(I_C R_N\)  is substantially lower than \(\Delta /e\) , and \(I_C R_N\)  of order \(\Delta /e\)  is often invoked as a signature of a high quality junction
[1]}, [2]}, [3]}, [4]}, [5]}, [6]}.
For devices 1A and 1B, \(I_C R_N\)  is approximately at or slightly below \(\Delta /e\) , which is lower than \(\pi \Delta /e\)  by factor of 3-5. This statement is equivalent to the discussion in the main text on suppression of \(\delta I_C\)  in comparison to \(e\Delta /\hbar \) , provided that \(G_N\cdot h/2e^2\)  numerically matches with \(I_C/\delta I_C\) . The corresponding plot of \(\delta I_C\)  as a function of \(\tau _\text{SN}\)  is shown in Fig. REF c. It illustrates that the data on devices 1A, 1B and 2B is consistent with the ballistic SQPC picture, with the weak link length approximately equal to or shorter than the coherence length.
